I cannot create a new page

I cannot seem to create a new page. Here are the steps I’m taking:

I click on Manage.
I click on pages.
I insert the data I need to insert.
I click save.
When I scroll down to Page Preview I get this:
“The Page cannot be found.”
When I click on View Site, and click on the tab to the page I have created I get this:
“The Page cannot be found.”

After five hours of this I am about to run screaming for the hills so that I cannot be found.

HELP!